Hello,
I'm not optimistic, i'd like to spend 60$ max so either i won't find one, either i'll have to sacrifice something.
Priority on money and 87/84TKL layout, i can live without blank keys (obviously).
My researches let me find that (+ the answers) :
Shipping costs are included and is for Europe only.- Cherry Compact-Keyboard G84-4100 (From DE : 
~50€)
- HPE (from CN : 
72,11€, From FR : 
88€)
- Keycool 87 (from CN : 
76,92€, From FR : 
77€)
- SGK-4000 (From DE : 
83,70€)
- Noppoo Choc Mini (From FR : 
89,99€)
- Cooler Master CM Storm QuickFire Pro (From DE : 
92,30€)
- PLU ML-87 TKL (From CN : 
105.99€)
- Keycool 84 (?€)
Most of them are too expensives for me but that's the least expensive i've found, i'm ok with used keyboards.
I didn't talk about switches because i haven't researched much on it, i mostly code & play on my computer.
Edit : It seems that i would need brown/blue one.