yes, sheds are often available for free-on-collection
Our wendy house was £40 with local delivery (albeit not near us, but we had friends nearby). We sold ours (6x4 shiplap cheapass Homebase job, about 8yrs old but unused for 7yrs :shock
for £150 five years ago
You can always get someone to help reassemble? I mean, if me, a little 5' weakling with no practical skills at all* can manage to reassemble a 4x4 playhouse with the OH helping only to screw in the really tight screws, or hold things up, I'm sure anyone else (able-bodied...) can try
*OK, so I am a modelmaker (kits), but that's different, it's much smaller!