Looking for simple label stamp

Here is one that's similar to the one you linked. Try going to Scrapbook dot com and searching for label stamp. A bunch came up for me. And they ship pretty quick.

Kelly Purkey has one I use a lot that comes with a die (although disappointingly not for the round label). It can also be found at sb.com Kelly Purkey label stamp set

Check out the following: 

Elle's Studio Labels Stamp (10 designs) & coordinating Elle's Studio Labels Metal Die

Elizabeth Craft Designs Retro Labels stamps (9 designs); no coordinating die set

Altenew Dot Labels Stamp Set (9 label designs plus 4 accents); coordinating Altenew Dot Labels Die Set; see also Altenew Labels Stamp & Die Bundle

While I have the Hero Arts Kelly Labels (also linked above/below) & Hero Arts Kelly Documented sets, I often quickly cut out the stamped basic labels with scissors or a trimmer rather than spend time lining up dies, so you may want to consider buying only the stamps & try fussy cutting them before investing in dies. Note I also use & recommend the EK Success Photo Labels punch. HTH & you find your ideal label(s)! 

It's almost 1.5"