These earplugs look decent quality for the money, 40 earplugs for £2.48 delivered works out at just over 6p per earplug.
Product Features :-
Contoured 'T' shape fro easy insertion and wear
The non-irritating non-allergenic self-adjusting foam recovers to fit virtually any ear canal
High-visibility magenta and yellow colours make compliance checks quick and easy.
Each pair of ear plugs is individually wrapped.