It's not often you see beeswax blocks for sale in a retail setting .. I sell them but I don't package them as it's a bit of a commodity.
These are the nearest likely candidate I can find. My moulds are roughly 3" x 1" x 1" ... they are silicon brownie moulds .
I think these clear acetate boxes would just about fit the blocks I make .. you might have match the moulds to the packaging rather than the other way round.
https://www.amazon.co.uk/NBEADS-Tra...fix=clear+lid+gift+boxes,aps,73&sr=8-272&th=1
The problem is that beeswax is a commodity ... I sell my 1oz blocks for £1.50 ... so any additional packaging is going to push the price up.
You might think about just making or buying a display case to display the bars loose and unwrapped but providing your retailer with some bags like this for when they sell them ..,Depends what sort of shop you are selling through,
https://www.amazon.co.uk/kuou-Clear...7401&sprefix=Small+Sweet+Bags,aps,77&sr=8-176