On a $5,000–$8,000 system, that's roughly $500–$1,200 in sales commission tied to the transaction.
Be your own salesperson. Keep the commission.
You already sat through the presentation. You already decided you want water treatment. So why pay someone else hundreds — or even more than $1,000 — to convince you again?
Upload the quote you already have. If it qualifies, we compare it, beat the price by at least 10%, and you keep more of the money in your pocket.