There are enough L/H rifles out there that it's not hard to find something to fit the bill. Guntrader and similar, and great forums like the SD, is have made LH guns much easier to source and to sell, so there's really no problem there. Some L/H rifles do sit on GT for ages, but IMO that's more because they're in too niche a format even to find a buyer in R/H.
I buy only LH guns, unless they are (a) ambidextrous (b) easy to adapt to L/H config, e.g. via stock shims, or (c) especially unusual or desirable, e.g. my 7x57R/16g Krieghoff drilling, which is everything I wanted except for the cheek-piece being on the wrong side of the stock; ditto for my .222/20g Zoli Corona combination gun (though this is less good to shoot left-handed because it the front trigger in particular requires a very deliberate straight-back trigger press to operate without binding). I also have a couple of R/H Mossberg Hushpowers, because, aside from being the only option, the safety, action and stock are all ambidextrous, and having the ejection port on the R/H side is no problem: it's just as easy to tilt the gun to the left to check clear or drop in a cartridge.
The hefty surcharge often placed on new L/H guns is admittedly galling, especially the discrimination involved could be avoided by spreading any additional costs across the 90% of R/H guns sold or simply designing for reversibility*, but the satisfaction of having a gun that's configured for you, not for someone else, soothes the sting quite quickly (IIRC I paid about £300 more for a new LH Heym SR30 back in the 1990's, and have never regretted doing so.)
*A good example is Daystate's Delta Wolf, which is designed so you can easily reverse the cheek-piece, safety, and cocking lever, and magazines can be inserted from either side. The programming screen is inconveniently on the L/H side, but a firmware fix could readily filp it so it could be read from the top.
