Other option is to buy fishy’s anchor set up. This will get you started for a good price.
if you need more anchor rode then try MarineScene. They have off cuts at low prices. You can always splice 2 together to give a longer line. I use 3 strand 12mm easy to splice.
I use marinescene off cuts for my dock lines. Splice a loop, cut to length and your away, lots cheaper. Once worn out (yes they do wear, stretch and fray on ends unless you backsplice) can use as fender lines or bin.
As above, minimum 1x boat length of chain preferably 1.5 x boat length. Check your splices every few month, they can fray and you don’t want to tighten on anchor and it go ping!
Look out on Facebook for chain, you can get some real bargains but it must be Galv. Stainless won’t be cheap but will be shiny 😉