I started off with exactly those ladders from wickes! They're like an old friend. (Though they cost me £55, not £50)
I needed 3 section though, so I thought I might as well make the switch to trade as you dont get 3 sec domestic.
The 2 sections trade are about 10Kg heavier than domestic, takes some getting used to.
Some insurance companies can get funny if you dont use trade duty, but I did perfectly well with domestic for months.
Silly