Due to COVID-19 impact, the airmail services to all the destination may subject to delay, it will normally arrive in 3~8 weeks, especially to USA, Canada, Italy and Spain.
it will only appear on the buyer's order, and it depends on the buyer's country (or state), the seller will not know how much the buyer would pay, and it's collected from buyer by eBay directly, eBay collect and remit tax to the tax authorities in accordance with applicable state law.