passat 99 1.8 t engine problem
 

Does anybody know how I can buy a new engine for passat 99 1.8 turbo!I went to mechanic today and they told me that the engine needs to be replaced and it will cost about 10 000 dollars I can not afford that price I paid for this car 4200 dollars!Could anybady give me an advice,please I dont know what to do!
Are the new engines so expensive!!!!!Is there any places this engine could be found cheaper!