Is there a database which shows coords?

I did some calculations, and maybe they will help someone else.

If gold was costing 100,000 coins, npc vendor prices would be:

Cotton Thread, Grease, Animal Fur: 60 silver for 40 = 1500 coins each

Silk Thread, Concentrated Glue, Purified Oil, Rough Fur: 1 gold for 40 = 2500 coins each

Logs, Pig Iron, Sandstone, Coal Dust: 60 silver for 20 = 3000 coins each

Compound Thread, Strong Glue, Compound Oil, Leather: 2 gold for 50 = 4000 coins each

Azureworm Silk, Colored Glue, Glaze, Reinforced Leather: 2 gold for 60 = 3333 coins each

Rough Lumber, High-carbon Steel, Gravel, Coal: 1 gold for 20 = 5000 coins each

Vega String, Super Glue, Compacted Glaze, Superior Leather: 3 gold for 60 = 5000 coins each

High-Grade Lumber, Steel Alloy, Corundum Powder, Charcoal: 2 gold for 30 = 6667 coins each

Fine Lumber, Refined Steel, Rubstone Powder, Anthracite: 2 gold for 25 = 8000 coins each

Lumber Essence, High Alloy Steel, Granite, Extruded Charcoal: 3 gold for 30 = 10000 coins each

So, for example, if gold cost 110,00 coins each then you would add 10% to those prices.

Also, our level 4 production quests require second tier drops (2500 coins each), which drop from level 37 monsters and lower. When you are level 37 (or lower), you gain experience rapidly from monsters, which makes gathering these difficult for a single character. Meanwhile, you need a lot of these materials.

Each weapon you smith requires three copper bars, which means 6 high carbon steel, 6 concentrated glue and 6 rough furs per weapon. They also each need 3 yellow jades. Sawtooth Blades require 12 purified oil, Ornamented Bows require another 12 rough fur, and Heretic Banishing Patakas require 13 silk thread. So for one round of attempts, you need 18 high carbon steel, 18 concentrated glue, 30 rough furs, 9 yellow jades, 12 purified oil and 13 silk thread. If each required 10 attempts, multiply those numbers by 10.

Blacksmith skills have the highest drop requirements -- others seem easier. (Blacksmith needs 18 glue, 30 furs, 12 oils, and 13 threads for one round of attempts.)

Tailor items each require only 1 yellow jade and 2 hard rim muslin (or 4 silk threads, 4 coals and 4 purified oil for each item). StoneBlood Bazubands require another 2 high carbon steel, Glowing Cuisses require 5 rough fur, and Wraith Robes require 3 rough lumber. So drop requirements for one round of attempts would be 5 rough fur, 12 silk threads and 12 purified oil.

Jewelry requirements are 1 yellow jade and 2 amulet wood per item (4 rough lumber, 4 concentrated glue, 4 purified oil for each item). Dragon Scale Necklace needs 3 gravel, Wavewatcher Pendant requires 6 rough fur, and Ring of Magical skies requires 3 gravel. So drop requirements for one round of attempts would be 6 rough fur, 12 concentrated glue and 12 purified oil.

Since you will need to make multiple rounds of attempts and can almost certainly benefit from making some additional gear for yourself there would be almost no cost advantage to buying anything less than the bulk quantities you get from the cash shop, if you are going to be buying any of these items instead of collecting through some other means. And because of the level issues you are going to need help collecting items which drops -- and thus you will need to help others, or run a lot of alternate characters, if you are going to pass any of these tests.