Welcome to the forum,
If you’re not connected to the seller and genuinely signed up to share information, that is much appreciated and you’re of course free to buy what you like at whatever price you like.
However and while I mean no harm to that Finnish craftsperson, from the look of it I find his or her strap quite pricey for a quality level that’s not so special (
@Dan S kind of beat me to it).
The straps offered on the forum here by
@jankoxxx, aka Watchstrap Heaven, are basically half the price for what’s clearly a much higher level of craftsmanship and finishing (with finer stitches and heat pressed lines) with fine leathers.(samples below).
Many other strap makers offer more competitive quality and pricing, such as Martu Leather (samples below), which I only bought a long time ago but was quite happy with, Delug straps in the US or GLC Straps out of Italy.
They may not offer Raindeer leather, but frankly I wouldn’t mind leaving those raindeers alone.