2 Story Suitable Ladder

How much use is it actually going to get on a yearly basis. Clean the gutters one/twice a year. Painting exterior probably every 4/5 years. Might I suggest hiring one for the small about of time that you will use it.

If you only have a small shed then obviously a aluminium extension ladder isn't going to fit, as an alternative you could put a bracket on a boundary wall and store it there. That is if you do decide to buy on.

I 2nd @sleeper12 re telescope ladder. I certainly wouldn't trust them at that height