Any of you LEGO fans have any tips for building up a lego collection for my kid on the cheap or at least cheaper?
and (some will disagree with that) buy clone-brands that are cheaper. the quality of the clone brands is catching up. the only downside with clone-brands is that the often actually clone lego designed sets instead of designing their own which is not really ethical. but many brands also have their own sets.
local flea-markets for example, thrift stores, craigs list, other auctioning sites...
on craigs list and newspaper classifieds you could even ask. some people keep their old lego, waiting for an opportunity to give/sell it to someone who deserves/needs it instead of selling it to someone looking to make a profit.
it takes some searching, patience and good luck.