Instruments can be sent to me for assessment and approximate valuation. There are critical internal components that need to be inspected. The fee for most instruments is $50. This fee is waived if the instrument restoration is performed by me. Shipping cost to/from my shop is paid by the customer.
If you only want more background and approximate value of an instrument you have, I may be able to provide some annecdotal information and advice based on photos and videos sent to me. Due to the high functional criticality of the internal reeds and valves, without physical inspection, I can only guess or provide general observations and very approximate valuations. There is a $28 fee.