I wouldn't part with one thin dime until all of it was vatted and magnafluxed. I don't know what the present value of them is, but there is an 8BA block on ebay that has been vatted, magged and bored/honed. Starting price is $550 and there have been not bidders, so that's probably a little pricey.

Canadianals asking price of $1,200 American for a complete motor sound pretty reasonable to me.