Electronic Transformer for Halogen

I have Brille brand electronic halogen transformers with lamp holders available for sale: 50 units, 20–60 W, 230/12 V, with the following specifications: - Main material: Plastic / PVC - Supply voltage (V): 230 - Input voltage (V): 230 - Output voltage (V): 12 - Primary: 240 VAC / 50 Hz - Secondary: 11.8 V, 60 W - Compatible with dimmer switches - Overload protection - Overheating protection - Short-circuit protection Unit price: €2.50; or €100 total for the full lot of 50 units. Hand-delivery available in Lisbon municipalities (Campo Pequeno / Entre Campos / Campo Grande areas) and Sintra (location to be agreed upon).