IDK what the engine alone weighs, but if you can stay under 70#(maybe it's 80#?) there is a huge difference in cost. I crated mine and it was 116#, cost me 150 to ship from MI to KS, one way
It cost less to ship back($100) because builders usually ship frequently and do regular business with UPS and FEDEX.
If I do it again I'm gonna try a rubbermaid tub, expanding foam, and garbage bag the engine for a custom crate.