Sylvester Stallone TMZ.com

Sylvester Stallone has some heartbroken fans after an event with the "Rocky" star allegedly sold more photo-op packages than could be accommodated ... and now they'll get refunds.

Sly was booked for a gig last weekend in L.A. called "Experience With Sylvester Stallone LIVE" -- sponsored by a company of the same name, Experience With -- where folks shelled out to have a nice dinner, hear Sly talk onstage and bid on signed memorabilia.

sylvester stallone @anexperiencewith/Instagram

Naturally, there were different ticket packages available -- including some top-tier ones that included a meet and greet and promised a pic with the legend himself ... with pricing options from $750-$1,250.

Waiting for your permission to load the Instagram Media.

ncG1vNJzZmivp6x7tbnZZ5qopV9nfXN%2BjmppaGloZMC6uNWeqq2domLAta3LpaannV2ZwqS30mamrqxdpbWwwM5mpqllnZqytXnGq5yerF2brq%2B%2FjKucn62embKlew%3D%3D