I own all of those except the Search for Luke Skywalker set. My local Target didn't get too many of them in stock. I decided to wait for a holiday markdown sale towards the end of last year, but the ones they had were all gone before the sale went into effect. I've never seen any more of them except on eBay, and they want upwards of $50-$70 for one of them. That's a bit too pricey no matter how neat the packaging and figures are.
Congrats on the score! That's not bad...fifty pounds for all three items isn't too shabby. The Landspeeder alone can go on eBay for as much as $60 all by itself.