To keep things short: I wanted to transform my PS points into cash but didnt pay attention and bought those shitty tickets instead. They have exactly the same cost as the 10E cash tickets so I just sent an email to PS to try and change them. They told me no (Because it's a fraud and they know very well they might cost 10E but their true value is very well under 10E).
I never bet on anything that hasn't to do with poker so I was a bit annoyed but told myself ok... Ill just go for the easiest, worst paid bets in the spanish league (Barcelona vs Mallorca + Madrid vs Eibar) Basically the teams that were about to get stomped by the best teams in the league (made 2 bets to reduce variance)

Win both bets as expected. I check my bankroll and they have only paid like 30% of what they were supposed to pay. Turns out even though those tickets cost 10E in PS points, PS only pays you the benefits of the bet, they dont pay back the 10E that u used as bet.
Basically I paid 10E to get 3E in return

I must be a sucker. Just posting this so people are more aware of the scam tactics that are taking place in PS/Amaya.

So basically like 150E down the drain or some **** like that. I feel so ****ing stupid right now.

Careful with PS boys! most of yoy probably already knew that

Use them on underdog spots/parlays and you can convert them at like 80% of face value or so

It seems like what you got was 'bonus bets' where it only pays winnings not stake, so using them on a 2.00/+100 market thats 50% to win gets a 50% return, using them on a +400 underdog with that being a fair price gets you an 80% return and so on

Unless you're a sharp sportsbettor you'll probably convert them at a slightly lower rate but yeah use them on a lot of underdog spots/parlays if they allow for max ev return

Ye, I assumed they would pay back the 10E original fee. Would have never expected such a scam tbh. Will never happen again I guess.

How you use a 'bonus bet' is dependent on your bank roll.

It shouldn't be using it on decent underdog spots is mandatory if reducing variance is a concern arb it or as close to arbing as possible

Unless the bonus bet is like half your bankroll but these are 10 euro bonus bets he's talking about

I'm not sure if your agreeing with me or not?

Using 'bonus bets' correctly is a step in the right direction.

Given the original question your answer isn't helpful or correct.