I love peat pellets. It's what I started out using and continue to use out of familiarity. I plop them in nursery pots with good soil as soon the the seeds pop. I've tried other methods but am more comfortable using peat pellets
I agree with Edmick here, though I've had basically the same results w coco coir pellets. Peat and coir are great for starting seeds. I use a heat mat and one of the domed seed starting trays and have had good to great luck the last 5 years or so.
I'll start in the pellets and then transplant into solo cups about 4-6 weeks after they pop. Then 4-6 weeks later they come out of the cups and into the raised beds.
I did see the ones for sale at fataliis, but it that is indeed quite a steep price.
Ya 35 euros is tough, but they are quite rare indeed. You're new here tho catchthebear, so I advise you to stick around and get to know this community. With some time and genuine interaction chances are you'll find someone who can make a trade.