Let's take all of the inflation out of it and convert our shekels directly into loaves of bread, a trade unit that makes as much sense today as it did then.

According to this, a half-shekel was worth 160 grains, or kernels, of barley in biblical times. This means a full shekel would be worth around 320 kernels. So 50 shekels would net you 16000 kernels; a stunning stockpile of seeds.

A thousand barley kernels seemingly ranges between around 38 and 50 grams. So your 16000 kernels would be, at most, 800 grams of barley, taking up an area of about 70 cm^2.

Because barley is/was commonly made into bread, I'm going to convert our barley into flour. Assuming our extraction is perfect, and all parts of the grain are usable (not likely), we will have 800 grams of flour. According to this, 136 grams of flour is roughly equal to 1 cup of flour, a unit commonly used to bake. So our 800 grams gets us almost 6 cups of flour. We'll say 6 to be generous.

This recipe, makes one “small loaf” and calls for 2 cups of barley flour. There are, of course, a few other ingredients we're missing, but I'm not going to guess at how expensive/hard to get they would be. This means our 6 cups of barley flour makes us 3 “small loaves”. It's hard to say how many people this bread would serve. The picture of the recipe is cut into 8 slices, and I have to assume each is of a modest size. The thickness, pre-cooking, is said to be 1 cm, and it is said that it will rise slightly. If we estimate it is now 1 ½ to 2 cm thick (can't tell), then the bread looks to be a circle of about 16 cm to 22 cm across, 1 ½ to 2 cm thick. This doesn't seem like very much bread, but I cannot tell how dense it is.

For comparison, this suggests that the average US small pizza is 10 inches, or 25.4 cm across. This suggests that a small pizza, of that diameter, will feed 1 – 2 people. Our bread is slightly more than half the width, but has none of the filling toppings, so lets assume our bread is a full meal for 1 or 2 modern people. This means all of our bread fills (very generously) 3 to 6 people, as we have 3 of these loves.

So in biblical times, it seems like you could rape the daughter, buy Mom, Pops and Junior some supper, and everyone, including baby Jesus, would be cool with that shit. Plus, you'd get a wife who had to be dutiful to you according to that same bible! Hurrah for everyone (except your new wife)!

TL;DR: Rape the daughter, buy the family dinner.