First, if you figure the actual percentage of the gold content in those melted globs, you will quickly realize that they are often times less than 1% gold.
Many refineries will not pay out on material that is less than 1%. So if you took those globs to your local refiner, had them scan by XRF like NTR does, you will very quickly realize that they are not going to buy your glob, nor do they want to bother attempting to refine it. There is a good reason for this.
In order to extract the gold from your material, you have to part it in an copper, electrolytic cell. It takes far more solution to dissolve copper, than silver, so you have to have far more tanks to electrolytically refine material that requires to be run as a copper proposition.
If you attempted to smelt, you probably wouldn't be able to recover the values.
So because it costs more to refine copper than silver or gold, most refineries don't bother with copper. Once you melt pins all together, what you really have done is devalued whatever gold there might be, because you just made it far more expensive to extract it.
Figure it like this. In a lb of pins there is between, usually, 2-4 grams of gold. There is about 453.5 grams in a lb. If we assume on the high end that there is 4 grams of gold in each lb, that means out of every 453.5 grams only 4 are gold. Take 4 / 453.5 and you get .8% total gold content, on the extreme high side.
So those gold globs are about, guessing mind you, .8% gold. Not even one percent. And that is if the melted glob is a full lb, usually they are grams, or ounces. So lets take this one step further and use the example you stated above and ask ourselves how much is that gram really worth.
1 gram, right now, as I write this is worth $54.57. .8% of 54.57 = 0.43656. So each one of those globs, on the maximum side of it's value is worth about .43 cents.
Is it profitable to buy globs of melted pins? No, without exception, no, it will take far more to refine and extract than the actual value, not counting on what you paid for it. No, it's not a good idea, it's not profitable, you will loose money unless you keep it for enough years that it becomes cost effective to attempt extracting the gold from the alloy.
Scott