Yes, you can purchase a bundle of tour upgrades and get a discount.
Pro Embed Tour upgrades
price for 5 items will be $67.50 ($13.50 per item)
price for 15 items $180 ($12 per item)
price for 50 items $525 ($10.40 per item)
price for 100 items $900 ($9 per item)
Custom Map tour upgrades
price for 5 items will be $22.50 ($4.50 per item)
price for 15 items $60 ($4 per item)
price for 50 items $175 ($3.50 per item)
price for 100 items $300 ($3 per item)
Privacy & White List tour upgrades
price for 5 items will be $45 ($9 per item)
price for 15 items $120 ($8 per item)
price for 50 items $350 ($7 per item)
price for 100 items $600 ($6 per item)