Welcome to the forum, sounds like you had a good buy 
These tires on ebay below seem to be the best price, it's just a matter of removing the old tire and putting on the new tire, they are not glued on either rather broken down from age and stuck
http://www.ebay.com.au/itm/16pcs-rubber-...3ab004816f
These tires on ebay below seem to be the best price, it's just a matter of removing the old tire and putting on the new tire, they are not glued on either rather broken down from age and stuck http://www.ebay.com.au/itm/16pcs-rubber-...3ab004816f