In previous posts here, the $4,000 number mentioned is just about right with a "Sport" model.

Scale will set this figure higher and in most cases, significantly higher due to the addition of expensive retract systems, finishing materials and so on.

A Sport Jet such as the Facet-1200 or AV8R or Reaper and etc, @ ($350) + (x1.5) for finishing materials & support equip ($525) + Radio ($400) + 12# Turbine ($2,100) yields - $3,375 +/-.

Alternatives to lower costs are used engines and airframes, Package offerings by Turbine distributors or suppliers.

As to purchasing of ANY used engine or airframe, be sure you "fully" investigate the background of both.

If purchasing a used turbine, obtain the serial no. of the engine and check with the supporting distributor to gain a service/repair history etc. If doubt still exists, offer to pay to have the engine returned to the distributor or service center for an inspection and bench run and written report of condition. This will cost you some minimal funds, ($50-100) but the alternative could cost you BIG !

I trust these comments are of help in your decision.