Since condition is everything that is tough question to answer..I prefer Hondas myself, but I'd take a clean Yamaha over a beatup Honda anyday.
The Trimoto 200 was both a chain drive and shaft drive model, some with electric and some not, a few had reverse but not many...racks or no rack. All options..
Is the Honda better that the Yamaha or vice versa is an all day argument.
Your question as to whether its a good deal has only one answer, which one was better cared for and in better shape!! If you've seen the Yamahas in question it's easier for you to answer than us!
Current toys..
1986 Honda 350X..trail bomb!
1985 Honda 250SX..my main mudder
1985 Honda 250ES..Back in Black Trike
Current non-trike toys:
1990 Honda TRX300FW
1995 Seadoo GTX
1998 Polaris Indy Lite 340(Nearly new looking)
1998 Polaris Touring 500
1998 Club Car (electric)