More details will help. You've got a player count (10 max) and budget ($120) which is a good start.
What game do you play?
How much do people buy in for to start, how much cash ends up on the table at the end of the night?
Do you have a current blind setup you use?
Is there a particular reason you want a 50¢ chip? Nothing wrong with that, but they're slightly less common to use than 25¢ chips are, so your stock options will be more limited. At $120 budget you're looking at the very low end of price range, chips that cost around 25¢ ea max. I would give some more details and people can suggest you a nice breakdown for a 500 or 600 chip set which should meet your needs.
For chips in that price range you're looking at what are called sluggos or slugged plastics, which are plastic injection molded chips with a metal insert for weight and a labeled recess. Plenty durable, non-collectors often think they're premium because they have a nice hefty weight to them. Make sure when you buy a set of chips you use a website that lets you pick your own quantities (typically in denominations of 25). The prebuilt quantities are usually awful for actually playing.
Unpopular here, but it's definitely the most helpful answer to the question given. If anyone I knew in real life wanted to get a poker chip setup and told me they couldn't spend more than $150 I would show them the different available stock sluggo designs, the $/benefit just isn't there unless you're interested in chip collecting as a hobby or have a big budget.
Based on their other post any step up from the Walmart chips they're will using will be a revelation to his group.