Since you are in Germany, buy a sebo. Great power and supposedly inexpensive since they are made in Germany. Some of them come with 10 year warranties and replacement parts are readily available.
Also if you want repairability, do not buy a Shark. They have 900 models and getting replacement parts can be extremely hard because they don’t make the same model for very long. Dyson is slightly better in that regard but not much.
I’m assuming you’re in the US, look up the prices for vinyl fence on home Depot or Lowe’s website. They have pre build items for that type of fence. I would 2-2.5x your material estimate to account for labor, markup, and misc items that are needed. Removal and haul away of a chain link depends on what it looks like now. All in I would guess $4-5k if there isn’t much custom work.
I would say that if you are physically capable and have the time, fences are pretty easy to DIY with a shovel, level, and drill. there are plenty of resources online showing you how. And make sure to call your local dig safe number.