I'm not going first under any circumstances
I also have GameMaker: Studio Professional edition (99$) which library doesn't show (since it's not installed atm) or calculator shows (it only shows the free version), but I can install it and take a screenshot if interested so you can see it's actually professional edition and running in steam as a steam game (NOT non-steam game)
payment type: moneybookers, I'll delete my whole friend list and trasnfer steam to your email after I receive payment and I'll be available on second steam/skype/here if u'll have any troubles
Steam Calculator result:
You own 73 games worth: $1,041.37 USD
If you bought all these games on sale it would have cost: $350.27 USD
-this does NOT include the gamemaker studio professional
price: 330$
I'm first, only and original owner of this acc
the acc is verified by moderator on another forum (can give link to PM)
skype: senergyable
-I'm from EU if there are some restrictions on games or w/e (bought every game directly from steam or humble bundle)
note: there are 2 more games I bought on sale which im not going to list because of security of the account