Last year, I picked up sealed copies of all USA seasons except 4 for next to nothing. 4 (one of the weaker seasons) is seling for a fortune. Does anyone know why?

I'm not desperate for it, as I do have the complete UK series, but I am curious why the HUGE price differential (I was paying $5-$8 brand new for all the other seasons, & I haven't seen the USA S.4 even used under $40, & usually it's significantly higher than that.

Maybe it's as simple as there being, for whatever reason, an over supply on all the other seasons?

Wasn't four one of the most popular seasons? It had Robert Downy Jr, and if he hadn't gotten arrested again, he would've stayed in the cast and the show probably would've made it past its fifth season.

Bon Jovi's character was a huge mistake, as was the child.

I bought the entire series on ebay to get S.4; figuring I could at least get a few bucks each out of the other Seasons. So far, no luck..............