I made my own skimmer
The collection cup is a DVD disc container.
The cylindrical body is from the original skimmer I bought many years ago.
It's the only original part left. I even fabricated the reduction throat to skimmer neck.
I would have bought new acrylic tubing but the mininmum was something like 3 meter length & was a bit expensive when I only needed about a foot length.
If you have the know how, and you'll either save money, or, just like makin your own stuff, go for it.
I no longer use a skimmer, not for a couple of years.