Hey Fanscape here is a tidbit from Serpentius,

Re: Farm kits: These items are never actually biome restricted. It's not the biome that restricts what can grow where, it's the local climate and soil conditions. You can change soil conditions with alchemy, and you can potentially do things to make the sunlight, humidity, and moisture of a region work for you, if the technology is available to you. So in theory you can Try to grow everything everywhere. When we talk about crops being "meant for a certain biome" we're saying "They will grow here without the need to take extraordinary measures."

FAQ Link

Hope that helps!

It is an item you can trade. so if you can't get a refund you still might be able to get something for it.

All refunds are dealt with through Xsolla, not COE.