Search eBay for:

eBay is one of the best places on the internet to find deals on vacuum tubes. You can often find large lots of assorted tubes for low prices if you’re not worried about the most desirable name brands like Mullard or Telefunken. Sometimes you can find them buried in overlooked lots too though.

• 6EU7, [ 12AX7, 12AD7, 12BZ7, 7025 ], 12AT7, 12AY7, 12AV7, [ 12AU7, 5814, 6189, 12BH7 ], 12DW7, [ 6N1P, 6DJ8 ]
• 12FV7
• [ EF184, 6EJ7 ], EF86, 5879
• 6L6, [ 6K6, 6AR5 ], 6550, 5881
• 6V6, 6CM6, 6AQ5, EL90, 6004, 6005, 6094
• EL34, 6CA7
• [ EL84, 6BQ5 ], [ 6BM8, ECL82 ], [ 6GW8, ECL86 ]
• 6AK6, 6AV6, 6AT6 
• [ 6AU6, 6186, 6AG5, EF96 ], 6CB6, 6EW6
• 6SN7, 6SL7, 5691 
• 6CG7,6FQ7
• nuvistor, 6DS4, 6CW4, 7587, 7586, 6DV4, 6C62, 7895, 8056, 8628
• [ 6J6, ECC91 ]