Buyer Requests (BR) are where someone who wants something done, rather then going through Gigs & Sellers to find the right seller, simply posts their job & budget. Sellers can scan any BR they are offered and make a proposal if they think it is a fit.
There are a few things to be aware of with BR. most are sadly offered way below real market rate budgets. Many have little to no development of the job Scope or Brief making them hard to price. Most will never respond if you seek to make their job/expectations clearer. I don’t know about here but in other places most of these sorts of requests are never filled.
While there are a few decent buyers in there, the common thinking is that the Seller has to chase the Buyer so they think they will get a better price and more features for the low price. All expectations of effort are put on the Sellers as generic pawns which makes for terrible buyers - or non-buyers as is most commonly the case.
Most people here report ratios of about 50:1 as a conversion rate on BR so don’t get too excited.