Why not try a Raspberry Pi with a good quality HAT like Allo DigiOne? Run Ropiee or some other software on it. £150 all in. Even if you end up spending £3000 plus on a streamer anyway, at least you will have something to compare it with which cost you less than the discount you negotiate!
(Worth checking what the streamer you buy has inside the box. Apparently a number of them use R-Pi anyway).
(Worth checking what the streamer you buy has inside the box. Apparently a number of them use R-Pi anyway).