Although these photos don’t seem to be Chrono24 photos, the seller sells on Chrono24 and, as it’s been said previously on OF, Chrono24 prices are often, but not always higher than watches on offer elsewhere - including eBay.
My view is that you’ll always be able to get a watch like this, at this sort of price, at anytime so - it’s worth looking around first.
I think you’re entirely right to look for a stainless steel model, which is wearable dressed up or down.