Second hand prices are good, i just sold a 125i Click which meant the 5 years i had it it cost 4,500 baht a year. Great bike that, perfect for around town.
I've just bought a 160 Click and it's very good, feels smooth, certainly more power than you'll ever need. Shop around for prices, for example Mityon dealers in Pattaya charge an extra 5k so look out of town if you care