SYSTEMS AND METHODS FOR BUYING VIRTUAL ITEMS FROM MULTIPLE ONLINE SALES PLATFORMS, THE VIRTUAL ITEMS BEING USEABLE WITHIN AN ONLINE GAME

1 . A system configured for buying virtual items listed on multiple online sales platforms, the system comprising:

one or more hardware processors configured by machine-readable instructions to:

manage user accounts for users in an online game, wherein individual user accounts are associated with individual users, wherein the individual users are associated with individual user inventories that can include one or more individual virtual items, wherein the users include a selling user associated with a selling user account and a buying user associated with a buying user account, and wherein the buying user is associated with a buying user inventory;

effectuate a presentation to the buying user, wherein the presentation includes one or more representations of at least one of (i) a first sales listing of a particular virtual item on a first online sales platform and (ii) a second sales listing of the particular virtual item on a second online sales platform, wherein the first online sales platform allows buyers to make purchases using a fiat currency, and wherein the second online sales platform allows buyers to make purchases using a cryptocurrency;

receive two or more indications of two or more offers to purchase the particular virtual item from two or more prospective buying users, wherein the two or more indications include a first indication of a first offer from the buying user;

subsequent to accepting the first offer, effectuate assignment of ownership of the particular virtual item to the buying user or to the buying user account, such that the particular virtual item is included in the buying user inventory; and

transfer, to the selling user or to the selling user account, at least a portion of an amount of consideration provided by the buying user in exchange for the particular virtual item.

2 . The system of claim 1 , wherein the virtual items are usable within an online game.

3 . The system of claim 1 , wherein the one or more hardware processors are further configured to:

effectuate a notification to the two or more prospective buying users whether the two or more offers have been accepted or denied.

4 . The system of claim 1 , wherein exactly one of the two or more offers is accepted.

5 . The system of claim 1 , wherein the one or more hardware processors are further configured by machine-readable instructions to:

receive a request from the buying user for information regarding at least one of the first sales listing and/or the second sales listing for the particular virtual item,

wherein effectuating the presentation occurs subsequent to receiving the request from the buying user.

6 . The system of claim 1 , wherein the one or more hardware processors are further configured by machine-readable instructions to:

determine that the buying user provided the first offer that has been accepted.

7 . The system of claim 1 , wherein the one or more hardware processors are further configured by machine-readable instructions to:

notify the first and second online sales platforms of whether the two or more offers have been accepted or denied;

wherein the at least two online sales platforms deactivate publications of the first and second sales listings, subsequent to notifications whether the two or more offers have been accepted or denied.

8 . The system of claim 1 , wherein effectuating the assignment of the ownership of the particular virtual item includes transferring the ownership from a holding account to the buying user account.

9 . The system of claim 1 , wherein the one or more hardware processors are further configured by machine-readable instructions to:

generate the first sales listing and the second sales listing, wherein generating one or both of the first and second sales listings of the particular virtual item includes converting seller-provided price information to either the fiat currency or the cryptocurrency.

10 . The system of claim 1 , wherein assignments of the ownership of the particular virtual item are recorded on a decentralized database that stores a registry of assets and transactions, wherein the assets include the particular virtual item, wherein the decentralized database represents a blockchain.

11 . A method for buying virtual items listed on multiple online sales platforms, the method comprising:

managing user accounts for users in an online game, wherein individual user accounts are associated with individual users, wherein the individual users are associated with individual user inventories that can include one or more individual virtual items, wherein the users include a selling user associated with a selling user account and a buying user associated with a buying user account, and wherein the buying user is associated with a buying user inventory;

effectuating a presentation to the buying user, wherein the presentation includes one or more representations of at least one of (i) a first sales listing of a particular virtual item on a first online sales platform and (ii) a second sales listing of the particular virtual item on a second online sales platform, wherein the first online sales platform is allows buyers to make purchases using a fiat currency, and wherein the second online sales platform allows buyers to make purchases using a cryptocurrency;

receiving two or more indications of two or more offers to purchase the particular virtual item from two or more prospective buying users, wherein the two or more indications include a first indication of a first offer from the buying user;

subsequent to accepting the first offer, effectuating assignment of ownership of the particular virtual item to the buying user or to the buying user account, such that the particular virtual item is included in the buying user inventory; and

transferring, to the selling user or to the selling user account, at least a portion of an amount of consideration provided by the buying user in exchange for the particular virtual item.

12 . The method of claim 11 , wherein the virtual items are usable within an online game.

13 . The method of claim 11 , further comprising:

effectuating a notification to the two or more prospective buying users whether the two or more offers have been accepted or denied.

14 . The method of claim 11 , wherein exactly one of the two or more offers is accepted.

15 . The method of claim 11 , further comprising:

receiving a request from the buying user for information regarding at least one of the first sales listing and/or the second sales listing for the particular virtual item,

wherein effectuating the presentation occurs subsequent to receiving the request from the buying user.

16 . The method of claim 11 , further comprising:

determining that the buying user provided the first offer that has been accepted.

17 . The method of claim 11 , further comprising:

notifying the first and second online sales platforms of whether the two or more offers have been accepted or denied;

wherein the at least two online sales platforms deactivate publications of the first and second sales listings, subsequent to notifications whether the two or more offers have been accepted or denied.

18 . The method of claim 11 , wherein effectuating the assignment of the ownership of the particular virtual item includes transferring the ownership from a holding account to the buying user account.

19 . The method of claim 11 , further comprising:

generating the first sales listing and the second sales listing, wherein generating one or both of the first and second sales listings of the particular virtual item includes converting seller-provided price information to either the fiat currency or the cryptocurrency.

20 . The method of claim 11 , wherein assignments of the ownership of the particular virtual item are recorded on a decentralized database that stores a registry of assets and transactions, wherein the assets include the particular virtual item, wherein the decentralized database represents a blockchain.