The cost of a premium bullet, versus the total cost of even a local-area day hunt, amounts to a pathetic figure....mere pennies extra for a RELIABLE bullet.
Back in the '70s, when Nosler Partitions were almost the only "premium" bullet commonly available, a group of my friends and I engaged in a several-year survey of shooting results on barren-ground caribou. As residents of the Northwest Territories, we were each allowed at least five caribou per year, and in some years as many as ten animals. With six of us shooting, and often using our wives' tags as well, we accumulated a good bit of data on a lot of caribou.
We reported the range, the shot angle, penetration, and estimated time to immobility and death. Recovered bullets were weighed and measured.
BG caribou can weigh from a couple of hundred pounds up to as much as 400 and more (rarely, I think) for a fat bull.
We determined that the Nosler Partition in a VARIETY of weights and calibers (6mm/95 grain to .338 Winchester Magnum/250, and including such rounds as .270, 7mm Remington Mag, .30-06, .300 H&H, and .308 Norma) ROUTINELY killed better, quicker, and with greater penetration than Hornadys, Sierras, Remingtons, Winchesters, Speers in the same weights and calibers.....you name it.
Did the animals die with the non-Noslers? Sure, but not as reliably as when we used the Noslers. More rounds were needed fairly often, and many of the "other" bullets shed large amounts of weight or even came apart. It was rare to recover Noslers from the animals, and I for one really WANT two holes in any animal I shoot.
A bullet that loses a lot of weight or fragments badly, even though it killed THAT animal, is serving notice that it MIGHT fail on the next one. I won't accept that uncertainty. Even before those caribou tests, I used Partitions almost exclusively for moose, bear, and caribou, and never had a hint of a problem.
In later years, I find myself using Barnes X bullets for some rifles which prefer them, and my .338 Savage shoots TSXs as if it thinks it's a benchrest rifle! Same thing, though, the after-impact performance is utterly reliable.
If I burn as much as ten gallons of gas on a day's hunting trip, I've spent as much for gas THAT DAY as I would have spent for a box of 50 premium bullets which would last me for MANY hunting trips! Shoot cheaper bullets for practice, but get GOOD bullets for game.