AmStaff Fitness Olympic Weight Plate Holder for Power & Squat Racks – Fits 2x2, 2.33x2.33, 3x3 Inch Tubes, 1" Hole – Storage Horns for Weight Plates on Power Rack – Pair

These are what I have - work great. https://www.amazon.com/dp/B0B9R2KT3F?ref=ppx_yo2ov_dt_b_product_details&th=1

$310/12 is roughly $25 per peg, which is about what you'd pay for a decent no-name / weird-name brand on Amazon. I think the ones I got for my Anubis were $59/pair, so about $240 for your application. https://www.amazon.com/dp/B0B9R2KT3F?ref=ppx_yo2ov_dt_b_product_details&th=1