Under 25 youre not gonna get anything great in terms of build/sound quality

Jvc marshmallows were my favorite at that price point

jvc marshmallows or RHA MA350s

sony do some decent stuff too.

check out Sennheiser CX 300 II's, they usually hover at around $30/25€ on amazon. i have a pair and they sound amazing for their price. ended up getting a pair of RHA MA750s which are like 4 times the price and i like how the senns sound more. the only annoyances are that the earphone cables are different lengths and the wire is really thin (still durable tho, i abuse the fuck out of mine and they're still going strong after 3 years) but otherwise great buy

Dang, I'm sad you want in ears on the cheaper side. I was going to recommend my Etymotic ER4s. I had a mold of the inside of my ear made at a otolaryngologist, and sent them off to ACS Custom for their custom made ear sleeves. About $350 in total, but I'm very happy with the results.

To actually be helpful though.. people always recommend the MEE audio M6 and M6 PRO. Both cheap, ($20, and $45) respectively. Sturdy, and still have a nice flat sound signature.

Kz ATE are probably among the best you can do for in-ear

I second the Sennheiser CX 300II Pretty great quality for a killer price.

im surprised the xiaomi pistons didnt come up in this thread already

best earphones ive owned, i got the pistons II

Sennheiser CX 300 sounds like a great deal!
ill keep the chink ones in mind if i cant find CX for under 30
thanks guys

https://www.aliexpress.com/store/product/2016-Original-KZ-ZS3-Noise-Cancelling-Headset-With-Mic-Hifi-Sport-In-ear-Earphone-Dynamic-Driver/519064_32679857635.html

https://www.massdrop.com/buy/tfz-exclusive-series-iems
This is about the cheapest you are going to get with earbuds while still getting something worth a damn.