You can get a discount on repairs. It may cost $500. The big effort is tearing down the camera, once that is done to replace the shutter and mirror box, the rest is easy. There is a switch controlled by the mode dial that may be jammed or broken, if the lock button is the issue, you can replace it for $6.
New. RF. Mirrorless (EOS R) Netflix Approved. Prices, specifications, availability and terms of offers may change without notice. Products / Services may be manufactured by and/or supplied to us by third party manufacturers / suppliers for distribution / resale (non-Canon brand products). Prices above are maximum retail price (MRP) and may FJtb4.