Never heard of the site, but New World wines (Aus, NZ, Chile, SAF, US etc) tend to be predictable and consistent.
Euruopean wines can fluctuate massively from year to year, just because of the lack of consistent climate and research is important though straightforward. Some years will be sublime and exceptional, some will be underwhelming.
If you go outwith the supermarkets there are lots of online suppliers and almost all have great introductory deals, and then lots of offers as you go on. They will try and draw you into regular purchases of cases, plus a Xmas case and so on.
If if you are clear on your budget and know what you like, then it is probably best to mix it up between supermarkets and specialists. I donít drink much red wine but I enjoy a relatively cheap own-brand that one of our big supermarkets does, and I enjoy a particular bottle that Laithwaites seems to have the distribution rights to.
Similarly, there is a dry white that one of the German premium stores does that we like and for a couple of quid more, the specialist has a really nice Sauvignon blanc.
If you do like wine then it is probably worth buying a case online and unless you really want to continue, then cancelling within the cooling-off period. We are signed up to a couple of packages. Mrs Mibbes has some expertise in doing a short-term sign-up to various deals which invariably seem to involve a gift box from Beer52. The fridge is full of grapefruit IPA