Thanks for the info and advice!
After i posted my original post i noticed that the seller has actually included a price, 1250 euro, which i think is overpriced. Considering i can buy a mint F1 body from Ebay Japan for 300 euro, albeit minus all the accessories and lenses.
But the €300 price tag will be closer to €425 once taxes, duties & shipping fees are included.
Then you'll have to find yourself a lens; a simple 150mm doesn't have to break the bank, but still expect to spend €175 at least on the international market. If you find one in Europe to your liking (big if), that means you may have it in your hand for € 200, but if it happens to be from the US or Japan, you're again looking at something like € 250 or so at least. That's the entry-level price point for LF lenses of decent quality in a working shutter; if you want something longer or more wide angle, the price point will shift up.
Here we are, at nearly € 700 and you still have just the camera and one lens. Alright, with just some film holders and a release you can get started and odds are you can get all this for less than €100 delivered to your doorstep (4 holders + shutter release), but if you want to add another lens, let's say a wide angle, and we're off to the races again...
Let's hope that the camera you saw comes with an extension rail, 'cause you'll find yourself looking for one of those as soon as you try your hands at an indoor still life shot.
Fancied a 90mm wide angle? Oh...go back online to find those bag bellows, because the stock bellows your camera came with doesn't compress that far.
Not saying that you should jump on the ad you saw, or that I'm advocating the seller's pricing of the items, but I have bought quite a number of things (photography related and otherwise) internationally, and the overhead does add up pretty quickly. It's true that a Sinar F can be found for €250-€350 pretty easily. But that's only the very beginnings of a much longer and ultimately more expensive story. If you add it all up, the camera itself ends up being more of an 'accessory' than the rest of the kit, in terms of costs.
Btw, I remain of the opinion that the Sinar F, marvelous as it is and relatively lightweight for a monorail, is an awkward choice for field photography. I've packed it many times in a back pack, and it's just annoying how much time it takes to set up for a shot compared to a field camera. I'm also extremely skeptical of the comments that a Sinar-based kit ends up being lighter in weight than a field setup. At least in my instance the opposite is true. There are of course all sorts of ways to skew the comparison "for sake of the argument" or whatever people fancy. In my practice, the Sinar spends its time mostly stashed away in a box, and when shooting outdoors on 4x5, I bring a
field camera. Perhaps there's something to its name, after all...
PS: not sure where you're located in the country, but feel free to drop by if you want to see what a Sinar F looks and feels like in real life. I'd be happy to set it up for you so you can see how it compares side by side with an old Toyo Field I've also got.