I just bought a 2013 account from ACCS123 a week ago, and here's my feedback
1) they don't accept paypal, they only accept bitcoins
So a USD5 account would cost you USD7 instead as it costs more to buy using bitcoins
2) they don't provide the original email account used to create these instagram accounts.
It means that if your account is banned, you won't be able to retrieve it
3) considering you are paying a premium using bitcoins. Their support staff are pretty rude. They gave me a snide remark telling me to do my maths when i ask why the email account provided doesn't have the original welcome/account creation onfirmation email from Instagram.
I was worried that i won't be able to retrieve the account if its banned or hacked (not without the original email)
They think I'm doubting the age of the account and tell me to do my maths.
In short, @DaveNL , buy with caution