I say average to low. The processes with the seller were excellent. The process and guidelines with Chrono24 were not as seamless as I would expect. Several of the guidelines afforded the seller and buyer should be reconsidered.
The refund process is also not a seamless process either. Our bank does not take 5 days to post a refund.
The purchase process is completed instantaneously yet, I'm finding it difficult to expect the same process for a refund.