If you can stomach dealing with the profiteers at Cheaper Than Dirt, they do have a quantity of surplus Greek HXP ammo in .30-06, some in boxes and some on Garand clips, at a decent price. They also have .303 for you Enfield Shooters, both in boxes and on clips.
Click here for .30-06 and .303 Greek HXP ammo for sale.
Let the record reflect that I am NOT a fan of CTD after the last gun-ban panic and their wholesale price-gouging when more reputable outfits like Brownells were still honoring their pre-panic prices, even on back-orders. That said, for some reason, CTD has this Greek ammo and no one else does. And let's face it...genuine quality military surplus .30-06 and .303 is neigh impossible to find these days as no one has made any of either for several decades. The HXP, made by the Greek Pyrkal factory, is non-corrosive and boxer primed, which means that you can reload these cases over and over. And HXP has proven itself to be more consistent and accurate in .30 than even the US Lake City-produced surplus stuff, a fact known to many Civilian Marksmanship Program(CMP) shooters who have bought and fired both from the CMP over the years. Likewise, the .303 that I've seen before is slightly oversize, running closer to .312 than .310-.311, and consequently it works better in those wartime Enfields that tend to have slightly oversized bores. (I shoot it, then reload the cases with Hornady's 174gr .312 SPRN bullets and my Enfields love it.)
So despite my dislike of CTD, I'm passing this on to my shooter friends. CTD will make some money, but they're going to make it off someone anyway, and hopefully this way, a few of you who shoot these calibers can benefit.