new/used Loncin engine needed

[thedoc62]

i need a new or used engine for my Skyteam V-Raptor 250 bike
original one is a 166FMM Loncin, 223 cc, air cooled, with either electrical and kick start, DEZI 30 carburetor
it suddenly got stuck , my mechanic fears a major damage and suggested me to look for a complete engine to avoid useless dismantling expenses
I found several chinese sites selling such engine at around 250$ but shipping expenses plus italian custom taxes make it absolutely not worth the cost
Can anybody suggest me a cheaper way to get this engine from China or Europe ?
Does any of you have a used engine to sell ?
I think also a different brand could fit, Loncin or Zongshen or Lifan they look all the same to me....................