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Maybe.
I’d wager many people are putting a lot more than £100 on at a time.
Also, if you’ve got the option of a ‘Revolut’ or a bank account, where your money is protected, you get interest (albeit tiny), you can receive and transfer money as you would any other bank, and you have the full balance of your account available in any currency in the world at the same exchange rate as Revolut, I’m not sure why you wouldn’t just open a bank account. It takes minutes with Starling. As far as I can tell it has all the advantages - and more besides, and none of the downsides. Just my tuppence.
Another thing to bear in mind - and it’s a big one. To the best of my knowledge;
Starling & Monzo are registered banks and as such your money (upto 85k) is covered by the FSCS.
Revolut isn’t, so you aren’t covered.