how much worth my hotwheel

I have lots of hotwheel, olds , most of them made in malaysia and some thialand. Are they worth of anything? I heard those made in china are worthless, how about the ones that are made in malaysia n thialand?
here are the some of lists-
white squid shark 1986
milk chocolate 1977
La Thien munda lucha pick up truck 1991
Ice teazer van 1986
tribute customs car 1982
malibu 1979 -thialand
matchbox construction pace dump truck 1981-thialand
sweet 16 racing car 1997
some of old car don't have name on it, just written mattel and year of manufacture.
I also have bunch of cool looking racing cars all malaysia made 1995-2003. Is there any website where i can actually send pic so that people can see and advice?
Any advice would be great to me. Thanks !!