Blog Toot is nearly known in search engines, so regcost resale value.
Other 2 has bad extensions and good keywords..and usually go for low$XX in resale market. But you never tell. some people get interested once in a while about .ws, .biz, .cc, etc.
Reg fee for all except blogtoot imho, the extensions let them all down, you picked the worst extensions their are, you could get low to mid $xx for blogtoot but only if you find the right end user.
thx friend for you opinion, thx ...
other estimation are welcome ...
But really 'Exposition' represent a super keyword, so why not if it will be with '.ws' sure it cost some money not as exposition.com but sure its important as i see ...
Also for Costumer.biz ...