I didn't figure out how to edit the existing post after some time, so if anybody can write in the comments how to do it - I'll appreciate it.
Meanwhile I'm doing my 1st update for this post: #407777
Update 1: 31st of January
To prepare myself for tomorrow I wanted to buy bitcoin via Lightning from Coinfinity, as I had done several times before, only to find out that their current limit on Lightning purchases is a total of 50 EUR. That was an unpleasant surprise, as I wanted to avoid on-chain fees, considering I don't plan to use on-chain transactions anyway. Bummer.
So, I went to HodlHodl to buy sats there (although I had never used it, I heard some good reviews) and was surprised to see that the selling price via SEPA transfer is ~43,000 for BTC, compared to ~39,500 at the current market price.
To do it the hard way, I would need to buy it on-chain and open a Lightning channel to Bitrefill, as I plan to use them the most. However, opening a 250 EUR channel doesn't really make sense, as by the end of the week, it's going to be empty. Also, I don't have a place at the moment to buy sats via Lightning to get liquidity back on my side.
Since Coinfinity mentioned that this is a temporary issue and they will increase the limit in the future, and Relai is implementing Lightning in the near future, I decided to make a compromise.
I bought 50 EUR worth of sats at Coinfinity - 124,547 sats.
Used my existing Lightning balance to have a total of 250 EUR (622,735 sats, 124,547*5 to have same result as if I bought from Coinfinity)
Used 200 EUR to buy BTC on-chain to use my fiat balance as planned.
So, for the 1st week of the experiment, I have 622,735 sats. Let's go!