Jojo & Corn Gentle Exfoliating Facial Scrub $ for 75ml, which is also very fine grain. Sukin Face Scrub, $12 for 125ml is also good, but the grains are not very fine.
Most of the facial exfoliation products I have seen exfoliate manually (ie, in the form of scrubs), however, Living Nature Vitalising Exfoliant, $42 for 50ml, does not do this; instead it uses fruit acids to exfoliate.
Some other options:
$10 and under: Skinfood Exfoliating Scrub 100ml $9.99
$15 and under: Natural Instinct Facial Scrub 125ml $12, The Herb Farm Rosehip Exfoliant 30ml $13.60, The Herb Farm Vanilla Seasalt Exfoliant 30ml $13.60
$20 and under: Viola Organics Renew Exfoliator 65g $15.90
$25 and under: Alba Botanica Hawaiian Pineapple Enzyme Facial Scrub 118ml $20.75, Kosmea Refining Rosehip Scrub 125g $22.50, The Herb Farm Rosehip Exfoliant 60ml $22.70, The Herb Farm Vanilla Seasalt Exfoliant 60ml $22.70, Avalon Organics Lavender Exfoliating Enzyme Scrub 100ml $24
$35 and under: Bod Facial Exfoliant 60g $34.90
$40 and under: Evolu Renewing Facial Exfoliator 125ml $37
$45 and under: Antipodes Reincarnation Pure Face Exfoliator 75ml $45, Ayurda Invigorating Scrub 65ml $45
$55 and under: Ayurda Gel Scrub 100g $52