I bought the UltraStep on-line right off the Little Giant website. Couldn't find any place cheaper and they had free shipping, plus choice of a free option (I got the add-on platform step option).
I bought the ladder for primarily two reasons: it is light weight (much lighter than the other fold-into-four-sections type ladders. And I bought it because it's very stable and changes easily to the heights I need on my camper.
Suggest you measure your compartment for storing the ladder first. The folded UltraStep is 64" long. My compartment measured 66", but the gasketed oval opening was only 62". The ladder sorta sneaks into the opening 'feet first', then nests in the compartment very well.
My compartment is located in the back, beneath the bedroom slideout. So accessing anything in that compartment while your slide is out means leaning way down or getting on your knees. That's why the overall weight of the ladder was important.