At that price point, not building one is a sheer waste of money. If you want the best deals, wait till Black Friday to order.
Pre Builts-
https://www.amazon.ca/CYBERPOWERPC-Xtreme-GXiVR8040A5OPT-Gaming-3-2GHz/dp/B07B6MYCH1/ref=sr_1_3?s=pc&ie=UTF8&qid=1541990422&sr=1-3&keywords=Gaming+PC&refinements=p_36%3A100000-150000
https://www.amazon.ca/CYBERPOWERPC-GXiVR8060A5-Desktop-i5-8400-GeForce/dp/B0757DVF4Z/ref=sr_1_1?s=pc&ie=UTF8&qid=1541990516&sr=1-1&keywords=Gaming+PC&refinements=p_36%3A100000-150000
https://www.amazon.ca/CYBERPOWERPC-Xtreme-GXiVR8040A5-Gaming-i7-8700/dp/B07B6H4GNZ/ref=sr_1_6?s=pc&ie=UTF8&qid=1541990516&sr=1-6&keywords=Gaming+PC&refinements=p_36%3A100000-150000
This is the best you can get for that budget.
If you build yourself:
Intel -
PCPartPicker part list /
Price breakdown by merchant
CPU: Intel - Core i5-8400 2.8 GHz 6-Core Processor ($245.99 @ PC-Canada)
Motherboard: Gigabyte - H370M D3H Micro ATX LGA1151 Motherboard ($99.88 @ Canada Computers)
Memory: G.Skill - Aegis 16 GB (2 x 8 GB) DDR4-3000 Memory ($157.99 @ Newegg Canada)
Storage: Kingston - A400 240 GB 2.5" Solid State Drive ($47.99 @ Amazon Canada)
Storage: Western Digital - Caviar Blue 1 TB 3.5" 7200RPM Internal Hard Drive ($47.99 @ Newegg Canada)
Video Card: MSI - GeForce GTX 1070 8 GB Video Card ($459.99 @ Amazon Canada)
Case: NZXT - H500 (White) ATX Mid Tower Case ($98.99 @ Newegg Canada)
Power Supply: EVGA - SuperNOVA G2 550 W 80+ Gold Certified Fully-Modular ATX Power Supply ($96.75 @ Vuugo)
Operating System: Microsoft - Windows 10 Home OEM 64-bit ($119.50 @ Vuugo)
Total: $1375.07
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-11-11 21:46 EST-0500
More RAM at a faster speed, bigger SSD, better Case, Much better GPU, a much more reliable PSU and all of this at a MUCH CHEAPER price than the prebuilt.
If you can go close to $1500:
PCPartPicker part list /
Price breakdown by merchant
CPU: Intel - Core i5-8400 2.8 GHz 6-Core Processor ($245.99 @ PC-Canada)
Motherboard: Gigabyte - H370M D3H Micro ATX LGA1151 Motherboard ($99.88 @ Canada Computers)
Memory: G.Skill - Aegis 16 GB (2 x 8 GB) DDR4-3000 Memory ($157.99 @ Newegg Canada)
Storage: Kingston - A400 240 GB 2.5" Solid State Drive ($47.99 @ Amazon Canada)
Storage: Western Digital - Caviar Blue 1 TB 3.5" 7200RPM Internal Hard Drive ($47.99 @ Newegg Canada)
Video Card: Gigabyte - GeForce GTX 1080 8 GB WINDFORCE OC 8G Video Card ($599.99 @ Memory Express)
Case: NZXT - H500 (White) ATX Mid Tower Case ($98.99 @ Newegg Canada)
Power Supply: EVGA - SuperNOVA G2 550 W 80+ Gold Certified Fully-Modular ATX Power Supply ($96.75 @ Vuugo)
Operating System: Microsoft - Windows 10 Home OEM 64-bit ($119.50 @ Vuugo)
Total: $1515.07
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-11-11 21:47 EST-0500
Same build as above but an EVEN better GPU.
Ryzen -
PCPartPicker part list /
Price breakdown by merchant
CPU: AMD - Ryzen 5 2600 3.4 GHz 6-Core Processor ($224.04 @ Amazon Canada)
Motherboard: Gigabyte - X470 AORUS ULTRA GAMING ATX AM4 Motherboard ($154.99 @ Canada Computers)
Memory: G.Skill - Aegis 16 GB (2 x 8 GB) DDR4-3000 Memory ($157.99 @ Newegg Canada)
Storage: Kingston - A400 240 GB 2.5" Solid State Drive ($47.99 @ Amazon Canada)
Storage: Western Digital - Caviar Blue 1 TB 3.5" 7200RPM Internal Hard Drive ($47.99 @ Newegg Canada)
Video Card: Gigabyte - GeForce GTX 1070 Ti 8 GB WINDFORCE Video Card ($509.99 @ Amazon Canada)
Case: NZXT - H500 (White) ATX Mid Tower Case ($98.99 @ Newegg Canada)
Power Supply: EVGA - SuperNOVA G2 550 W 80+ Gold Certified Fully-Modular ATX Power Supply ($96.75 @ Vuugo)
Operating System: Microsoft - Windows 10 Home OEM 64-bit ($119.50 @ Vuugo)
Total: $1458.23
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-11-11 21:50 EST-0500
Ryzen alternative with the same SSD, HDD, PSU and Case as the Intel Builders with the 1070, but with the Risen 5 2600 on the X470 which will allow for overclocking and the 1070Ti is a much better card than anything you find in the prebuilt.