How much do you think i could sell thse dirt bikes for?

1.1981 honda xl80s
its in great shape, just 2 little scratches and it needs polished.
how much do you think?
2. honda crf150 replica.
it has a 200cc motor in it and i bought it of the internet, for 700. i put about 400 in it and i was thinking about selling i for 700. its just one of those chinese bikes but it has more power that a crf250.
i want to get a rm125 or a yz125.
can you tell me how much you think i could sell these for?

id say about 300-600 off of the xl80 depends how bad the person wants it and what kind of original condition its in
does it have the lights? xls came street legal so headlight tail light blinkers does it have the key? side covers? the correct fenders, dents in the tank, rust in the tank? fork lock key, not sure if they came with a helmet lock, .. if it has all of these original things its good to make that its selling point

just think about all the people out there who were teens when this was on the show room floor in the honda dealerships and wanted it or how many people owned one as a kid and just want one to putt around on for sake of old memories, or give the same bike to there kid to learn on as they did
tons of people. hell.. im 20 and ive owned at least 8 xls in my lifetime a few 80s a few 100s two xl75s a xl250 ...and well id buy another one just to have sitting in my garage to take out once a month for old times sake

i wouldnt count on getting much out of the china bike they have a bad reputation for falling apart and being extremly hard to find parts for
if its a 200 off brand im positive its not as fast as a 50cc larger name brand bike
is the 200 motor aircooled? is it honda or offbrand/ lifan roketa or ...
but reguardless ... if its in clean shape some1 new to the sport would probably give you 500-800 personaly i wouldnt pay more then 500 but .. i know i could sell it to some1 else for 800

'bout tree fiddy

Try Craiglist or your local dealer.

You need to look up bikes that are similar in the classifieds in your area as things are worth different amounts depending upon what country you are in and where you live.