When you pay for a service you should get something in return.
(the first transaction you do is a transaction that rarible asks you to do - not your wallet)
That doesn’t make sense friend. You have not received any service from the platform, only transacted on the network, the initial fee is not paid to them, and is to open the channel. Rarible has no control over your wallet funds and cannot predict gas fees in advance, nor lock transactions from happening. Your wallet is sovereign, which is what you want in crypto. You just need to accept responsibility friend, have some humor and see it as a learning opportunity 
Are you part of the support team of rarible? I guess not. If not stop saying excuses all the time for something that is problematic from start to finish. When so many people say “they are scammed”, then “they are scammed”! Calling them uninformed is more a platform’s problem than that of the users. This is a rule of having any serious (legal) business.
Moreover, it is really easy to keep a running mean of gas fees. Many sites do it. Secondly notify the user that they should have “about” 100$ worth of ethereum in their wallet with a margin of error of 10 or 20$. These are things that anyone can code.
That is also likely not due to the platform, mistransacts happen all the time on this chain. Ethereum is not without fail, nor are wallets. Are you using a cheap browser extension wallet? If yes, then you have already failed yourself. Do some research, upgrade your hardware, come back fresh and try again, my advice. Or just use one of many other nft platforms, rarible is kinda in dev still with a gettho community governance structure, it’s bound to have it’s flaws, all DAOs do.
I didn’t open a wallet in order to buy ethereum. I opened a wallet and bought ethereum in order to create NFT. So first of all, a user that wants to buy NFTs shouldn’t necessarily care or be expected to be informed about crypto.
As a wallet, I use metamask. Everybody says so. I did my research. But as I said it’s not up to me after a point. In short: “if someone needs to be overinformed about a service in order not to get scammed and the service doesn’t inform them, then this services is problematic.”
So for now the platform of Rarible
can drain money without a purpose from your account if you don’t have all the gas required from the beginning (that you don’t know about). As their support team doesn’t give a damn addressing this issue, I will let other people know about it.