How long to hold on to promo sets

robfamily · 2014-09-22T00:59:49.000Z

I am new to lego investing. I was wondering if anyone could tell me the best strategy for selling their promo sets. Is it best to sell with lego is giving out their promo sets since more people know about them or is it better to wait until after they are done and there are fewer on the market. Right now I have a balloon cart, a couple mini coopers and a spaceman. I know I missed selling these during the promotion, but am wondering what to do with the next set of promos that I get. Also would it be better to hold onto my sets that I have now until the future when there are less on the market?