Hi, thanks for trying to get this business going. There is a lot of demand for the types of cruisers that are available in CR.
This crowd is very tough on you because they have seen (although most not in person) a number of CR and other central and south american land cruisers that have been beat to almost death in the plantations and then covered with new paint and bondo and sold as restored and or rust free.
To win this crowd over you will need to be very honest and knowlegable about the trucks you selling. Several examples of not being knowlegable about the HJ45 were very apparent. The true milage of that truck may have been 89K as you posted, but if you knew about cruisers you, or your husband would have noticed that the odometer had been dismantled and then put back together wrong. That, and several other things immediately made all the other statements (which could very well be true) suspect.
I don't think anyone will begrudge you for trying to make money when you resell these vehicles, and anyone that tried to import and ship from another country knows the value you provide.
Don't give up. You can list your sales on e-bay if you want, but the best info about land cruisers will be found on this site. You would instantly get some more respect if you bought a vendor star for this site.
Once you have shown that you are trustworthy and knowledgable, you might want to offer the inspection and shipping service to people that want to make their own deal with the original seller in CR.
Anyway, don't give up on mud yet, just get more knowledgable.