Told u one things..
my dad as the various bike dealers.. demak one of them..
Engine of course cannot compared to Honda and Yamaha.. but it's quite reliable.. selling a lot on this type of motor.. no major problem on this bike yet from few years back..
accessories, if u r the dealer, u can order the accessories .. and it's very efficient , seriously fast response form demak management and my father was shock.. since honda and yamaha's management famous in late taking invoice all that.. hehe gud luck by the way..