Due to shipping and system fees, as well as the cost of materials and the time involved, I am unable to offer discounts even if requested. Swan cartridges have quite fragile terminals and labels, so they deteriorate more quickly without the original case. When trying to buy WonderSwan games cheaply, you often encounter them in a bare state without a case. I also ended up with more and more loose cartridges, and I wanted a large number of cases for storage, so I manufactured them for myself and acquaintances. However, they seemed to be surprisingly useful, and I received requests for more, so I started distributing them. They are printed in clear PLA resin, allowing you to identify the game title from the outside. (They have a frosted glass-like transparency due to the layer-by-layer printing method.) The cartridge can be inserted either way, but the lock is only on one side, so you can use it without the lock if you insert it in the opposite direction. ※See photo 4 I fill trays with cases and store titles I play frequently on the side without the lock. They are thinner and smaller than the original cases, so you can store more in a tray. I will remove the minimum amount of burrs (※Although it will not be as much as shown in photo 5), but if you are concerned about burrs or surface debris, please trim them with a cutter or file. I have confirmed that all of them fit, but please understand that there may be minor scratches and individual differences due to the nature of 3D printing.