Why must all winter clothes for dogs be so expensive??

I’m going crazy about it, should I have a decent lined suit for the dog bastard, it costs AT LEAST SEK 600, and used ones are not available in her size and certainly not at this time of year. Below a certain size limit, it also seems that the smaller the more expensive even?

The dog weighs 2.5kg so she is not that cocky, needs an overall that goes down a bit on the legs as she has like 0.00001% body fat so she gets cold in 2 seconds.

Am on long-term sick leave and single, so I’d rather spend money on things that can justify their price. Sewing myself is also completely dumb as I have neither machine nor knowledge.

Does anyone have any tips for a sensible business or private person who can do this sort of thing, a little cheaper?