12,500 for this gn what do you think?

[Catch]

Item number: 180144429629 on e-bay please let me know what you think.
I am new to GNs and t-types and would like to know your opinions. Please help. Thanks.

 

[ES1]

Looks like alot of car for the money but I have not seen post about the company that built the engine.
Post and ask if any CA. guys know that builder.