One of the wisest moves when stocking new products or having an over stock of others is to give free samples.
Yes, the manufacturer might have its special booth which it will set up at various venues one day in a year, but sometimes it is worth giving samples of those items one has actually paid for.
Many new products or slow moving ones might, if the public was aware of them, be purchased.
For example, if I look through my groceries a number of them are the results of gaining that free taste and liking it.
Some products are badly packaged, so the consumer ignores them. If getting a free sample, there is a better chance they will be purchased.
It is worth being ‘out of pocket’ if that results in sales.