Smaller jobs imply larger overhead; you're testing an edge case. Estimating "quick recordings" of some random strings in their calculator I see roughly: 5 word

Smaller jobs imply larger overhead; you're testing an edge case. Estimating "quick recordings" of some random strings in their calculator I see roughly: 5 words for $8, 100 words for $35, 200 words for $45, 800 words for $70, 3200 words for $160 (~$0.05/word).