Alby is using bait and switch scam:
“a bait & switch scam can include situations where a product or service is advertised as free, but then customers are required to pay. In such cases, the promise of a free offer acts as the “bait” to attract customers. Once interested, customers discover that the free offer is unavailable, limited, or insufficient, and are then encouraged or required to purchase a paid version—the “switch.” “