In recent times Turbosquid is trying to sell their shit in an attractive way. Checkmate certification is an absolute non-sense that has created a new headache for buyers on TS. There are lot of quality models without checkmate certification, and lot of crap with checkmate certification. Above all the most annoying thing is that price is more than double for a model that is low in quality compared to others, only nonsense is, it has got checkmate certification. Also no chargeback for these models.
Fixing price for a model must be within artists freeedom. There are few vendors who call themselves Master artist (they are the shit on TS) , who never sleep and rest upon others success, and TS is their puppet. They are the one who expect thousand dollars for their everyday sh**. It is because of these greedy heads threatened TS, and TS in act of desperation to save themselves introduced Checkmate - an absolute nonsense.
All I like to say is TS is coating sugar on shit and gift wrapping it before selling to customers. There are lot of quality models out there, lots of sites dealing with 3D and 2D. better search before buying.