Repair It: Configurable; Lightweight; Simple.

#
# RepairIt by Trophonix
# - - - - - - - - -
# PERMISSIONS
# - - - - - - - - -
#  RepairIt.admin: Gives access to /repairit reload
#  RepairIt.repair: Gives access to /repair (amount)
#  RepairIt.repairAll: Gives access to /repairall or /repair all
#  RepairIt.reduced: Gives the player a reduced price
#  RepairIt.free: Gives the player free repairs
# - - - - - - - - -
# CONFIG REFERENCE
# - - - - - - - - -
# Placeholders:
#  {input}: Text they inputted for damage amount before trimming and cleanup
#  {damage}: Amount of damage being repaired
#  {balance}: Player's balance
#  {item}: Shows display name or item type if item has no display name
#  {itemType}: Shows the item type explicitly
#  {price}: Price it will cost
#  {originalPrice}: Price before reduction
#  {items}: Amount of items repaired (for /repairall)
# - - - - - - - - -
# pricePerDamagePoint: Price to charge per damage point repaired.
# reductionFactor: Price will be multiplied by this for players with RepairIt.reduced permission
# roundPrice: true/false; Whether to round the price to closest whole number
#
# confirmLargeRepair:
#   enabled: Whether to confirm a large repair
#   minimum: The minimum amount to confirm
#   message: Confirmation message
#   messageAll: Confirmation for /RepairAll
#
# failureAlreadyRepaired: Message to send when player attempts
#                         repairing a fully repaired item.
# failureInsufficientFunds: Message to send if player's balance
#                           is too low for the repair.
# failureNoRepairableItems: Message to send if player uses /repairall
#                           and has no repairable items.
#
# repairSuccess: Message to send when repair was successful.
# repairAllSuccess: Message to send when RepairAll was successful.
#
# free: Comes after "success" for players with RepairIt.free
# reduced: Comes after "success" for players with RepairIt.reduced
# full: Comes after "success" for all other players
# - - - - - - - - -

economyEnabled : true

pricePerDamagePoint : 2
reductionFactor : 0.7

roundPrice : true

invalidItem : "&c{itemType} items can't be repaired!"
invalidNumber : "&cNot a real number: {input}"

confirmLargeRepair :
  enabled : true
  minimum : 100
  message :
   - "&bRepairing {damage} damage from your {item} &bfor ${price}."
    - "&bType &a/repair &bagain to confirm!"
  allMessage :
   - "&bRepairing {damage} damage from your {items} items for ${price}."
    - "&bType &a/repairall &bagain to confirm!"

failureAlreadyRepaired : "&eThat item is already fully repaired!"

failureInsufficientFunds :
 - "&eRepairing {damage} damage will cost ${price}!"
  - "&eYour balance is ${balance}."

failureNoRepairableItems : "&cYou don't have any damaged items!"

repairSuccess : "&aRepaired {damage} damage from your {item}&a!"
repairAllSuccess : "&aRepaired {damage} damage from {items} items!"

free : "&bYour rank reduced the repair price! (${originalPrice} -> &a&lFREE&b)"
reduced : "&bYour rank reduced the repair price! (${originalPrice} -> &a${price}&b)"
full : "&bWithdrew &3${price} &bfrom your balance."