By way of example, assuming can get everything in a medium flat rate Priority box, any of those would go anywhere in the US (including military post services) for $18.40, jumping to $24.75 if you need to use a large flat rate box. Doing even ten pounds via Ground Rate (the cheapest option for minis) will vary depending on the zip codes involved, but within the Lower 48 it'll be somewhere between $13.40 and $33.20 - and more if any dimension of the box is over 12". 25 pounds ranges from $27.40 to $81.35.
When you're outside of 1st Class weight limits and you're not shipping books or CD/DVDs (which can use media rate) the Flat Rate Priority option is almost always the best bargain unless you're shipping within the same zip code.
Yes, I did used to sell and ship painted minis for a living.