I have been buying mainly solidi from Roma from the last 8 years, I live in Switzerland and have never had any issues with shipping or clearing the customs.
I manage to secure a solidi of barbaric mint from the mare nostrum hoard, I must admit I had my doubts due to the turmoil with R.Beal but the sale went well.
I have read a lot of comments on the prices some coins fetch but because I buy all over Europe I would say it is a general tendency , A nice solidi selling 350 to 400 € 6 years ago will now fetch 600 € , nevertheless one can still find good deals in smaller auctions.
Byzantine solidi are still great value for money . Just to end with the Roma saga , I must admit, and I am not the only one, I have always been surprised with the quality and abundance of coins on offer from day 1….